Jtekt Corporation

Eiji Kaneuchi

Ryousuke Imai

Yoshimasa Yamada

Koichi Nabeshima

Takeshi Takahashi

Yoshihiro Oono

Takeshi Kimura

A cylindrical cutting tool for processing splines formed on an outer circumference of a shaft member to extend in an axial direction includes blade portions which are formed in a spline shape on an inner circumference. The blade portions include: a first blade portion which is formed in a terminal end portion in a first direction along the axial direction and which is directed substantially toward the first direction; and a second blade portion which is formed in a terminal end portion in a second direction along the axial direction and opposite to the first direction and which is directed substantially toward the second direction.

Cutting tool and spline processing method

A rotation transmitting apparatus includes a first shaft on which multiple external teeth are formed so as to be arranged in a circumferential direction, and a second shaft in which multiple internal teeth are formed so as to be arranged in the circumferential direction, the second shaft being fitted to the first shaft so as to be slidable relative to the first shaft in the axial direction and so as to be engageable with the first shaft in a rotational direction through the use of the external teeth and the internal teeth. A protrusion is formed on the tooth flank of one of the external tooth and the internal tooth, the protrusion being projected toward the corresponding tooth flank of the other of the external tooth and the internal tooth. The protrusion is made of a resin that is more elastically deformable than the tooth flank.

Rotation transmitting apparatus, vehicle steering system, and intermediate shaft

The super finishing stone has such a shape that a width of an abrasive surface in a direction perpendicular to a radial direction becomes gradually narrower from outside to inside in the radial direction, when the raceway surface and the abrasive surface in contact with the raceway surface are seen at a plurality of sections perpendicular to the radial direction of the object to be worked, so that the abrasive surface and the raceway surface in contact with the raceway surface may intersect with each other at a constant angle at opposite side edges of the abrasive surface.

Growing community of inventors

Kitakatsuragi-gun, Japan

Eiji Kaneuchi